Home / 30,120.17-41,552.21-18,179.69

Finding the Fourth Proportional to 30,120.17, 41,552.21 and 18,179.69

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Solution

The fourth proportional to 30,120.17, 41,552.21 and 18,179.69 is: 25,079.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,120.17 : 41,552.21 = 18,179.69 : x
  2. Step 2: Convert to fraction form
    30,120.17/41,552.21 = 18,179.69/x
  3. Step 3: Cross multiply
    30,120.17x = 41,552.21 × 18,179.69
  4. Step 4: Simplify right side
    30,120.17x = 755,406,205.72
  5. Step 5: Solve for x
    x = 755,406,205.72/30,120.17
  6. Step 6: Final answer
    x = 25,079.75

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.